JPS637304A - Abrasive grain incrusted wire and its production - Google Patents

Abstract

PURPOSE:To easily obtain an abrasive grain incrusted wire having improved cutting and grinding performance by packing a mixture composed of metallic powder and abrasive particles into the space between a metallic bar and metallic pipe, subjecting the same to a heat treatment and cold drawing after hermetic sealing to form a wire rod and removing the above-mentioned pipe of the extreme surface layer from the wire rod. CONSTITUTION:The metallic bar 2 is inserted into the central part of the metallic pipe 1 apart at a space S therefrom to obtain a metallic body A. The mixture D essentially composed of the metallic powder 4 and the abrasive particles 3 having >=6 Mohs hardness is packed into the space S; thereafter, both ends of the metallic body A are hermetically closed by welding. The metallic body A is repeatedly subjected to the heat treatment such as annealing and patenting and the cold drawing until the wire rod having the required wire diameter is formed. The pipe 1 remaining in the outermost layer of the wire rod is removed by grinding and pickling, etc. The above-mentioned wire which has the mixed layer D' uniformly and securing holding the abrasive particles 3 on the central metallic bar 2 in the metallic layer 4' sintered with the metallic powder on the central metallic bar 2 is thus obtd.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a metal wire for cutting, grinding, or chamfering hard materials, etc., and more specifically, it is a metal wire for cutting, grinding, or chamfering hard materials, etc., and more specifically, abrasive powder is uniformly and firmly arranged and maintained on the surface layer. The present invention relates to a cutting and grinding wire and a method for manufacturing the same.

(Conventional technology) In recent years, hard materials such as ceramics, or silicon.

The use of metal wires for cutting semiconductor materials such as potassium arsenide, and for chamfering inside fine tags of metal processing materials has been studied and implemented.

The wire used for this purpose is a so-called saw wire, which is a high tensile strength wire rod with extremely high strength. Since the grinding action is performed only by frictional force, there is a problem of poor processing efficiency.

In addition, in the case of cutting, there is a method called discharge wire cutting, in which a high voltage is applied between the material to be cut and the wire, and the cutting is performed by electric discharge between them. There is a problem in that it is limited only to materials that have properties.

To this end, a new diamond wire has recently been developed in which the surface of the wire is coated with diamond powder using the plating method, and studies have begun to consider methods for efficiently processing the wire using the grinding force of the diamond powder on the surface. In this method, diamond powder that is simply attached to the wire surface mainly by Cu plating or Ni plating has a weak adhesion force, and it is difficult to form a uniform arrangement over the entire circumference of the wire surface.
When manufacturing diamond wires by applying ordinary diamond grinding wheel manufacturing technology, it is also possible to mix diamond powder into ordinary bond metal powders such as Ni and Cu, and sinter and fix the mixed material over the entire circumference of the wire surface. It is a place where

(Problem to be Solved by the Invention) However, it is certainly an ideal method to use the above-mentioned pound metal powder and sinter and fix the diamond powder mixed therein over the entire surface of the wire. However, at present, it is absolutely impossible to manufacture such a long silk wire using a normal sintering method.

- On the other hand, currently double-structured wires such as copper or aluminum-coated steel wires are generally used, but the (CBN ten-metal) wires as the object of the present invention are simply double-structured wires. Even if the conventional double structure wire manufacturing technology is applied to make the steel wire, for example, in the wire drawing process, CBN powder will severely attack the wire drawing die and cause it to wear out.
From a practical point of view, wire drawing using conventional techniques is impossible.

Furthermore, when cutting and grinding using a diamond wire using the conventional plating method, if the workpiece is a ferrous material, a reaction tends to occur between the diamond powder on the wire surface and the iron. The fundamental problem is that it is difficult to process, and if processing continues using diamond powder, the diamond powder will rapidly wear out and become useless, making it unusable from an economic point of view.

In view of the above points, the present invention further expands the range of abrasive grains and finds an effective means for adhering the abrasive grains, thereby distributing effective abrasive powder uniformly and more firmly within the surface layer of the wire. The purpose is to improve holding, cutting, and grinding functions.

(Means for Solving the Problems) Next, the features of the present invention that meet the above objectives will be explained using FIGS. 1 to 3 corresponding to the embodiments. A metal rod (2) made of the same or different metal material as the pipe (1) is inserted into the center of the manufactured pipe (1) with a gap (S) between them, and the required dimensions are assembled. Obtain the metal body (A) and fill the gap (S
) is filled with a mixture (D) mainly containing metal powder (4) and abrasive particles (3) having a hardness of 6 or more, and the metal body (
Seal the ends of A).

Next, the metal body (A) with its ends sealed is subjected to heat treatment such as annealing and patenting, or hot working such as extrusion and rolling as the case may be, and then subjected to a cold wire drawing process to form the desired shape. The wire rod has the same diameter as the wire rod.

Then, the remaining metal pipe (1) located in the outermost layer of the wire rod is removed by polishing, pickling, etc., and the abrasive particles (3) are placed in the metal layer (4)' where the metal powder is sintered. An abrasive incrust wire is obtained in which a mixed IJ(D)' in which IJ(D)' is uniformly and firmly held is exposed on the surface of the central metal rod (2).

FIG. 3(a) is a microscopic photograph of an example of the wire surface metal structure obtained in this manner.

Therefore, the present invention provides the abrasive incrust wire itself obtained as described above and the method for producing the wire as the first invention and the second invention, respectively. The abrasive particles are diamond powder, CBN.
(Cubic Boron N1tride) Not limited to powder, but ceramic with a Mohs hardness of 6 degrees or higher.

Cemented carbide, glass, etc. can also be used, especially BCN, alumina (A It 203), silicon nitride (Si3N), etc.
A major feature is that ceramics such as 4) can also be used.

Here, the Mohs hardness is an empirical scale that determines the hardness of a mineral by comparing it with 10 standard minerals, and the standard minerals range from soft (scale 1) to hard (scale 10). In order, they are talc, slagstone, calcite, fluorite, apatite, orthoclase, quartz, yellow jade, corundum, and diamond.

Among these, the abrasive particles used in the present invention usually have a hardness of 6
It is harder than the orthoclase standard, and anything less than that is not suitable for the performance of the abrasive incrust wire.

The above abrasive particles are usually mixed with metal powder and filled in the gaps in the metal pipe in powder form, but if the abrasive particles are not subjected to hot processing such as extrusion, it is effective to granulate them in advance and fill them. It is true.

In addition, the metal body (2) is inserted into the center to provide reinforcement and a gap, and the pipe-shaped metal body (B) is placed in close contact with the outer periphery.
It is also effective to cover the surface with a thin metal film (C) or to wrap it with a metal thin film (C).

In this case, in addition to the same type of metal component as the metal pipe or metal rod, a different type of metal component can also be used for the pipe-shaped metal or the metal thin film to be wound.

(Function) According to the abrasive incrust wire obtained as described above and its manufacturing method, the metal pipe and the central metal body are made of the same material and have the same dimensions to meet various usage conditions. Alternatively, it becomes easy to form it into an appropriate size using different components.

In addition, a mixture consisting mainly of metal powder of various components and abrasive grain powder with a Mohs hardness of 6 degrees or higher, which has been homogeneously mixed in advance in a mixing ratio adapted to various usage conditions, is filled and sealed in the gap between the metal pipe and the metal rod. By doing so, it becomes possible to manufacture wires while maintaining the mixing ratio and homogeneity during filling through hot and cold working, thereby increasing the service life. In addition, the entire outer periphery of the mixture is covered with metal pipe metal, and during wire drawing, the wire drawing die contacts and draws only the metal pipe on the outer periphery, and the abrasive particle powder The abrasive powder adheres firmly to the abrasive powder without contacting the surface.

The outer periphery of the obtained wire with the required wire diameter consists only of the metal pipe component, so when this component is removed, a mixed layer containing abrasive particles that was in the inner layer emerges on the outermost surface of the wire, and the abrasive Grain-in-crust wire is easily and inexpensively produced.

(Example) Hereinafter, further specific examples of the present invention will be described.

FIG. 1 is a schematic diagram showing a structure in which a metal body is inserted into a metal pipe according to the present invention, and a mixture mainly composed of metal powder and abrasive particles is filled in the gap of the metal body (al is a top view of the metal body). , (b) is a sectional view of the same side.

In the figure, (A) shows the metal body, (1) is the outermost metal pipe, (2) is the metal rod in the center, and metal rod f
2) is inserted into the center of the metal pipe (1) with a gap (S), and in the gap (S) are abrasive particles (3) with a Mohs hardness of 6 degrees or more and metal powder (4). is filled with a mixture of

Here, carbon steel is generally used as the material for the metal pipe located on the outer periphery of the metal body (A) and the metal body (2) in the center, but depending on the conditions of use, stainless steel, copper alloy, etc. You can also use metal pipes (1)
The metal material of the metal rod (2) and the metal rod (2) may be different from each other.

In addition, the thickness of the metal pipe (1) and the diameter of the metal rod (2).

Alternatively, the width of the gap (S) provided between the two depends on the wire diameter of the final wire used, the average particle size of the abrasive powder (3) to be filled,
Further, the suitability is determined depending on the mixing ratio of the abrasive powder (3) into the metal powder (4).

In addition, examples of abrasive powder (3) with a Mohs hardness of 6 degrees or higher include diamond powder, CBN powder, BCN, alumina (AI!20:l), and silicon nitride (SiJ+).
Examples include ceramics, cemented carbide, glass, etc., and can be used singly or in a blend as appropriate.

Furthermore, as the metal powder (4) with which the abrasive particle powder (3) is mixed, Ni powder or Nz-based alloy powder is generally used.
In addition to this, there are also Cu powder and Cu-based alloy powder.

Alternatively, bonded metal powder used in the production of general abrasive tools, such as CO powder or CO-based alloy powder, may be used. Then, after filling the mixed powder (D) with the metal body (A), the gap (S) is sealed by welding a cap material to both ends of the gap (S), and then is subjected to heat treatment such as annealing or patenting. Alternatively, it is subjected to hot working such as extrusion or rolling, and then subjected to cold wire drawing to obtain a wire rod of a desired wire diameter.

At this time, during hot working, the metal powder (
If it is undesirable for 4) to diffuse into the metal pipe (1) or the central metal rod (2), the inner surface of the metal pipe (1) or the outer periphery of the central metal body (2) should be coated with copper plating, etc. in advance. It is also possible to prepare a layer for preventing diffusion by applying a plating layer to prevent the diffusion phenomenon.

For example, when filling the gap with a mixture of diamond abrasive particles and Ni powder, the specific gravity of diamond and Ni is 3.5 g/cffl and 8.9 g/crl, respectively, so due to the difference in specific gravity, Both powders often show a tendency to segregate. In products made from such a segregated and packed mixture, especially when hot extrusion is not carried out, the exposed abrasive particles exhibit significant differences in density depending on the location, causing problems as a product.

Therefore, in order to prevent this, diamond abrasive particles and N
The mixture with powder i is subjected to a granulation process to form a powder consisting of spherical granules, and the powder is filled into the gap between the metal pipe and the central metal rod.

In this way, diamond abrasive particles are less likely to be separated or segregated than Ni.

A binder is usually added as an additive to perform the granulation process, but if a binder such as an organic compound is used, this may inhibit the bonding between powder particles during subsequent processing.

Therefore, it is effective to fill the gap with granulated powder and then heat it to decompose and evaporate the binder to eliminate the cause of the trouble.

Hereinafter, specific examples of manufacturing an abrasive incrust wire by the method of the present invention will be listed.

Example 1 In the metal body (A) shown in Fig. 1, JIS-3S41 steel was used for the outer metal pipe (1), and JIS-5K71il was used for the central metal rod (2). there was. The dimensions of the metal body (A) at this time were an outermost diameter of 70 m.phi., a thickness of the outermost metal pipe of 5 x 1, and a width of the gap (S) of 8 x.

Diamond particles were used as abrasive particles, and a mixture of pure Ni powder and 0.5% by weight of carbon was mixed with an average particle size of 15%.
After filling the mixture (D) containing 13% by volume of diamond fine particles of 0 μm, both ends of the gap of the metal body (A) were sealed by welding.

Thereafter, it was heated at 1000° C. for 2 hours and extruded at an extrusion ratio of 15. Further heat treatment and cold wire drawing are repeated.
, Q+uφ wire rod. The tensile strength at this time is 182
kg/u+2. FIG. 3(b) is a micrograph showing an example of the metal structure of the cross section.

Next, the wire rod obtained above was placed in a hydrochloric acid solution with a concentration of 35% for 15 minutes.
The carbon steel (SS41) of the metal pipe remaining on the outermost layer of the wire was dissolved and removed by dipping for a minute, neutralized with an alkaline solution, and washed.

Figure 3 (al) is a micrograph showing an example of the surface metallographic structure of the diamond abrasive incrust wire obtained in this way. It can be seen that

When the abrasive incrust wire obtained as described above was used for cutting and grinding iron-based materials, it was found that with the diamond wire produced by the conventional plating method, the diamond powder on the surface did not interact with the iron on the surface of the workpiece. Although microbial abrasion caused by the reaction made machining difficult, extremely good cutting and machining were possible.

Example 2 40 mesh diamond particles with an average particle size of 150 μm were used as abrasive particles, and 4% by volume Ni powder (carboninyl fine powder) was mixed with 0.5% by weight of camphor as a binder, and wet spraying was performed. A powder consisting of agglomerates was prepared by performing granulation treatment in advance according to the method.

Next, the granulated powder was filled into the gap of the metal body (A) similar to that in Example 1, and the ends of the gap were welded and sealed, and then placed in an air bath at 300°C for 1 hour. The camphor was sublimated.

Thereafter, heat treatment and cold wire drawing were repeated without extrusion to obtain a wire rod with a diameter of 1.2 fins.

The tensile strength at this time was 180 kg/cal.

When this was used for cutting and grinding of iron-based materials, it was possible to perform good cutting and grinding that was comparable to that of Example 1.

Example 3 Gap (S) of metal body (A) having the same configuration as shown in Example 1
) with pure Ni powder and CBN powder with an average particle size of 150 μm (
After filling the mixed powder (D) containing 13% by volume of 3), both ends of the gap (S) of the metal body (A) were welded and sealed.

Thereafter, it was heated at 1050° C. for 2 hours and extruded at an extrusion ratio of 15. Further heat treatment and cold wire drawing are repeated.
, Qmmφ wire rod. The tensile strength at this time is 183k
g/dragon”. This was added to 1 g/dragon in a 35% hydrochloric acid solution.
The wire was immersed for 5 minutes to dissolve and remove the carbon m (S541) of the outermost peripheral part (1) of the metal body (A) remaining as the outermost layer of the wire, and the wire was neutralized and washed in an alkaline solution.

The wire according to the present invention manufactured in this way can perform extremely better cutting and grinding processing of iron-based materials, as well as the above-mentioned implementations, compared to wires made using the conventional plating method. there were.

Example 4 The metal body (A) shown in Fig. 1 was made of JIS-3S41 steel for the outermost metal pipe (1), and JIS-3S5-3K7 for the metal rod (2) in the center. Using. The dimensions of the metal body (A) at this time are a maximum diameter of 70Ila.
φ, the thickness of the outermost periphery (1) was 10 mm, the width was 4 mm with 1 gap (S). Then, in the gap (S), abrasive particles of CBN powder with an average particle size of 15 μm are added to pure Ni powder at a volume ratio of 10%.
After filling the mixed powder (D), both ends of the gap (S) of the metal body (A) were welded and sealed.

Thereafter, it was heated at 1050° C. for 2 hours and extruded at an extrusion ratio of 15. Furthermore, heat treatment and cold wire drawing are repeated until 0.
A wire rod with a diameter of 2 mm was used. The tensile strength at this time is 209k
g/m". This was dissolved in a 35% hydrochloric acid solution
After being immersed for 0 minutes, the carbon steel (SS41) at the outermost periphery (1) of the metal body (A) remaining as the outermost layer of the wire was dissolved and removed, and the wire was neutralized and washed with an alkaline solution.

As is clear from the results shown in Table 1 below, the wire manufactured in this way has a wire coated with CBN powder abrasive particles (3), compared to a diamond wire of the same wire diameter with diamond powder attached to the surface by the conventional plating method. It has been found that it has a strong adhesion force on the surface, can increase cutting speed, and has a significantly long life.

Table 1 shows an example of the results of the above comparison experiment.

(Hereinafter, blank spaces) Table 1 Example 5 Next, as a material for the cylindrical metal body (A) shown in Fig. 4, the outermost metal pipe (1) was used as a rolled steel material for shell structure (J
IS-5S-41), and carbon tool steel (JIS-3K7) was used for the central metal rod (2).

The dimensions of the cylindrical metal body (A) in this case are: outermost diameter 70 mmφ, thickness of the metal pipe (1) 5 dragons 1 gap (S
) with a width of 6R.

Then, a pure Ni tube (B) with an inner diameter of 48 mm and a thickness of 2 N is inserted into the gap (S), and a pure Ni tube (B) with an inner diameter of 48 mm and a thickness of 2 N is inserted into the gap (S)' between this Xi tube and the outer metal pipe (1). Ni metal powder (4) and CBN abrasive particles (3) with an average particle size of 140 μm
) was filled with a mixed powder (D) in a volume ratio of 13%, and then the gap (S) at both ends of the metal body (A) was sealed by welding.

Thereafter, it was heated at 1050° C. for 2 hours and extruded at an extrusion ratio of 15. Furthermore, heat treatment and cold wire drawing processing are repeated,
The wire rod had a diameter of 1.0 mm. The tensile strength at this time is 138k
g/mm".

When we observed its structure using microscopic photographs, we found that CBS
It was found that the abrasive particles were separated from the center by the pipe-shaped Ni metal, and the CBN abrasive particles bit into the center and did not form a notch.

Next, this is immersed in a hydrochloric acid solution with a concentration of 35% for 15 minutes to dissolve and remove the carbon steel (SS41) of the outer metal pipe of the metal body (A) that remains as the outermost layer of the wire, and neutralized with an alkaline solution. and washed.

The CBN abrasive grain incrust wire manufactured by this method has the CBN abrasive particles (3) uniformly attached to the outer periphery, and the CBN abrasive particles do not bite into the center inside the notch. There was no long life wire.

Furthermore, this wire was able to perform extremely good cutting and grinding of iron-based materials, whereas conventional diamond wires caused adhesion and were difficult to process.

Example 6 As the raw material for the cylindrical metal body (A) shown in FIG.
-3TK30), and piano wire (JIS-3WR372B) was used for the metal rod (2) in the center.

The dimensions of the cylindrical metal body (A) at this time are the maximum diameter of 2
0 weight, metal pipe (1) thickness 21, metal rod (2
) with a diameter of 1311.

Then, a pure Nt thin film band with a thickness of 0.5 mm is tightly wrapped around this metal rod (2), and a pure Nt thin film band with a thickness of 0.5 mm is wrapped around the metal rod (2), and a pure After filling the mixed powder (D), which is a mixture of Ni metal powder and CBN abrasive particles (3) with an average particle size of 15 μm at a volume ratio of 13%, the gaps (S) at both ends of the metal body (A) are covered. Welded and sealed.

Thereafter, the heat treatment of heating to 850°C and then cooling in the air and cold drawing were repeated seven times, and the wire was drawn to a diameter of 0. Two dragon wire rods were used. The tensile strength at this time was 171+r/Ryu2.

This was immersed in a hydrochloric acid solution with a concentration of 35% for 20 minutes to dissolve and remove the carbon steel (STK30) of the metal body (A) and the metal pipe fl at the outermost periphery that remained as the outermost layer of the wire, and then soaked in an alkaline solution. Neutralized and washed.

The CBN abrasive incrust wire manufactured in this way has a higher value as shown in Table 2 below, compared to a CBN incrust wire of the same wire diameter manufactured by the wire drawing method without using a conventional pipe-shaped metal body or metal ribbon. As is clear from the results, there was no fear that the CBN abrasive particles would bite into the metal bar at the center, creating a notch in the center and causing breakage, and the life was extremely long.

Table 2 Example 7 As the raw material for the cylindrical metal body (A) shown in FIG. 1, JIS-3S41 wire was used for the outermost metal pipe (1).

JIS-3K7 steel was used for the metal rod (2) in the center. At this time, the dimensions of the cylindrical metal body (A) are the outermost diameter of 70mφ, the thickness of the entire outermost pipe (1) of 5cm,
The width of the gap (S) was set to 8 dragons. Then, in the gap (S), pure Ni powder is mixed with alumina (A A'
After filling the mixed powder (D) in which 13% of the zO3) powder (3) was mixed by volume wave, both ends of the gap (S) of the metal body (A) were sealed by welding.

Thereafter, it was heated at 1050° C. for 2 hours and hot extruded at an extrusion ratio of 15. Further heat treatment and cold wire drawing are repeated.1. The wire rod had a diameter of 0 mm. The tensile strength at this time is 183
kg/cj. This was immersed in a hydrochloric acid solution with a concentration of 35% for 15 minutes, and the metal body (A) remained as the outermost layer of the wire. Carbon 1 (SS) of the outermost metal pipe (1)
41) was dissolved and removed, neutralized with an alkaline solution, and washed.

The abrasive incrust wire manufactured in this way is used during cutting and grinding of ferrous materials.In the conventional diamond wire plating method, the diamond powder on the surface reacts with the iron on the surface of the workpiece, causing microorganisms. Although wear occurred and machining was difficult, extremely good cutting and grinding were possible.

Example 8 As materials for the cylindrical metal body (A) shown in Figure 1, the outermost metal pipe (1) was made of JIS-3S41 steel, and the central metal body (2) was made of JIS-3S5-3KT material. there was.

At this time, the maximum diameter of the cylindrical metal body (A) is 70 mm.
1 mφ, metal pipe (1) thickness 10 mm, gap (S
) width of 4 angles. In the gap (S), there is pure Ni.
Alumina (A) with an average particle size of 15 μm was added to the powder as abrasive particles.
After filling the mixed powder (D) containing 10% by volume of the lz(h) powder (3), both ends of the gap (S) of the metal body (A) were welded and sealed.

Thereafter, it was heated at 1050° C. for 2 hours and hot extruded at an extrusion ratio of 15. Further, heat treatment and cold wire drawing were repeated to obtain a wire rod of 0.2 mφ. The tensile strength at this time is 21
It was 0 kg/**2. This was immersed in a hydrochloric acid solution with a concentration of 35% for 20 minutes to dissolve and remove the carbon steel (SS41) at the outermost periphery (1) of the metal body (A) remaining as the outermost layer of the detergent, and then soaked in an alkaline solution. Washed and washed.

The abrasive incrust wire produced in this way has a stronger adhesion force of the abrasive powder (3) on the wire surface than a wire of the same wire diameter with CBN powder attached to the surface by the conventional wire drawing method. It was clear that the cutting speed could be increased and the service life would be significantly longer.

(Effects of the Invention) As explained above, the present invention uses a cylindrical metal body that can be easily formed with compatible materials and dimensions depending on the usage conditions, and fills the gap with metal powder and Morse with the required ingredients and mixing ratio. It is filled and sealed with a mixed powder with abrasive particles with a hardness of 6 or more, and since the outermost part is only made of metal from a metal pipe, it cannot be abrasive even if processed using conventional double structure wire manufacturing technology. There is no concern that the powder particles will directly attack the wire drawing die, and the wire can be easily drawn to the required wire diameter in the same way as conventional double-structured steel wire.

In the final step of revealing the mixed layer containing abrasive powder with a Mohs hardness of 6 or higher as the outermost layer of the wire, ordinary polishing, pickling, etc. are applied to remove the remaining particles on the wire surface. metals can be easily removed.

Moreover, since the metal body whose gap is filled with mixed powder and sealed is subjected to a wide range of heat treatment including direct hot working and cold wire drawing, the metal powder in the mixed powder is not sintered. The abrasive particles can be uniformly and firmly arranged and held in the mixed layer with the same mixing ratio as when filling, and the diamond wire can be made by simply attaching diamond powder to the wire surface by the conventional plating method. In contrast, even if the workpiece is an iron-based material, there is almost no microbial abrasion of the abrasive grains during machining;
Zn with the wire of the present invention using μm diamond abrasive particles.
When cutting Se crystals, the cutting speed can be increased by more than 5 times compared to conventional wires, and the life of the wire can be significantly extended, resulting in extremely excellent cutting or chamfering ability. An abrasive incrust wire suitable for cutting and grinding can be easily produced.

Furthermore, the wire according to the present invention has a significantly greater gripping force on the abrasive particles against bending than the wire made by the plating method.

The abrasive incrust wire according to the present invention has abrasive particles firmly embedded in the wire surface, so it can be used as a precision cutting wire to cut brittle materials or materials that are difficult to cut with cutting methods that use liquids such as water or oil. Ideal for

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the structure of the metal body used in the present invention.
fat is a top view thereof, (bl is a cross-sectional view of the same side. Fig. 2 shows a conceptual diagram of the abrasive incrust wire manufactured by the method of the present invention, and Fig. 3 (a) shows the metal on the surface of the wire. This is a micrograph (40x magnification) showing an example of the structure, and FIG.
This is a micrograph (40x magnification) showing an example of a cross-sectional metal structure (before polishing and pickling treatment). In addition, FIG. 4(a) (bl) and FIG. 5(a) (bl) are schematic diagrams showing each modification example of the metal body used in the present invention,
fill is a top view, ('b) is a sectional view on the same side, and
The figure shows a case in which a pipe-shaped metal is attached to a metal rod, and FIG. 5 shows a case in which a metal thin film is wrapped around a metal rod. (A)...Metal body, (B)...Pipe-shaped metal. (C) ...Metal thin film. (S) ...Gap between metal pipe and metal rod. (S) ...Gap between a metal pipe and a pipe-shaped metal or metal thin film. (1)...Metal pipe, (2)...Metal rod. (3)...Abrasive particles, (4)...Metal powder. (4)′...Metal layer. (D)...Mixture, (D)'...Mixed layer. Patent Applicant: Sumitomo Electric Industries, Ltd. Yugan 1 Figure vz Tuimo 3 Figure Ca> (b) Hua 4 Figure Procedures Principal Fusho (Spontaneous) May 25, 1986 Commissioner of the Patent Office Black 1) Akira Yu Tono 1 , Indication of the case 1986 Patent Application No. 150108 2 Name of the invention Abrasive grain incrust wire and its manufacturing method 3 Relationship to the case Patent applicant address 5-15 Kitahama, Higashi-ku, Osaka Name (213) Sumitomo Electric Kogyo Co., Ltd. (1 person) Representative's Kamitetsu Department 4, Agent residence: 3-9-10-6, Minamisenba, Minami-ku, Osaka, subject of amendment: Claims column 7 of the specification, Contents of amendment As shown in Attachment 2, the claimed abrasive incrust wire. 2. The abrasive incrust wire according to claim 1, wherein the abrasive particles are one or more selected from the group consisting of ceramic, cemented carbide, and glass. 3. A metal rod is inserted into the center of the metal pipe with a gap, and the gap between the metal rod and the metal pipe contains mainly metal powder and abrasive particles with a Mohs hardness of 6 degrees or more. The metal pipe is then repeatedly subjected to heat treatment such as annealing or patenting and cold wire drawing to form a wire rod, and then the metal pipe constituting the outermost surface of the wire rod is polished. A method for producing an abrasive incrust wire, characterized in that the surface layer is removed by pickling or the like to form a bonded mixed layer of metal powder and abrasive particles. 4. The method for producing an abrasive incrust wire according to claim 3, wherein the abrasive particles are one or more selected from the group consisting of ceramic, cemented carbide, and glass. 5. Claim 3 in which the mixture is granulated and filled in advance
A method for producing an abrasive incrust wire according to item 1 or 4. 6. After sealing the end of the metal pipe, it is hot worked by hot extrusion or hot rolling, and then cold worked to form a wire rod. The method for producing an abrasive incrust wire according to item 5. 7. Claims 3, 4, 5, or 6, in which another pipe-shaped metal is closely adhered to the outer periphery of the metal rod inserted into the center, or a metal thin film is wrapped around the outer periphery of the metal rod. A method for producing an abrasive incrust wire as described in Section 1. 8. The metal pipe, the central metal rod, and the pipe-shaped metal and metal thin film adhered to or wound around the metal pipe are made of the same or different metal components, as described in any one of claims 3 to 7. Method of manufacturing abrasive incrust wire.

Claims (1)

[Claims] 1. A metal body in which a metal rod is inserted into a gap in the center of a metal pipe, and a mixture mainly consisting of metal powder and abrasive particles having a Mohs hardness of 6 degrees or more is installed in the gap. An abrasive incrust wire characterized in that it is formed by subjecting it to heat treatment, cold wire drawing, and removing a metal pipe on the outer periphery. 2. The abrasive incrust wire according to claim 1, wherein the abrasive particles are one or more selected from the group consisting of ceramic, cemented carbide, and glass. 3. A metal rod is inserted into the center of the metal pipe with a gap, and the gap between the metal rod and the metal pipe contains mainly metal powder and abrasive particles with a Mohs hardness of 6 degrees or more. The metal pipe is then repeatedly subjected to heat treatment such as annealing or patenting and cold wire drawing to form a wire rod, and then the metal pipe constituting the outermost surface of the wire rod is polished. A method for producing an abrasive incrust wire, characterized in that the surface layer is removed by pickling or the like to form a bonded mixed layer of metal powder and abrasive particles. 4. The method for producing an abrasive incrust wire according to claim 3, wherein the abrasive particles are one or more selected from the group consisting of ceramic, cemented carbide, and glass. 5. Claim 3 in which the mixture is granulated and filled in advance
A method for producing an abrasive incrust wire according to item 1 or 4. 6. After sealing the end of the metal pipe, it is hot worked by hot extrusion or hot rolling, and then cold worked to form a wire rod. The method for producing an abrasive incrust wire according to item 5. 7. Claims 3, 4, 5, or 6, in which another pipe-shaped metal is closely adhered to the outer periphery of the metal rod inserted into the center, or a metal thin film is wrapped around the outer periphery of the metal rod. A method for producing an abrasive incrust wire as described in Section 1. 8. The metal pipe, the central metal rod, and the pipe-shaped metal and metal thin film adhered to or wound around the metal pipe are made of the same or different metal components, as described in any one of claims 3 to 7. A method for manufacturing abrasive incrust wire.